Code now fails to build after nothing has changed

[KSOdin2]

I have been using the same project with the AI cube IDE (V 1.13) and AI (V8.1). When I now try to build the project I get the following errors:

I've updated the AI to the newest version, but the error seems still here. The error also seems to be a core function related to IDE 1.13.

Has anyone had this issue or know what has caused this? It's only happened since moving to CubeIDE 1.13. I have created a new project and not migrated an old project. 

Thanks 

[Pavel A.]

This is because of the new default toolchain (compiler, linker, newlib/nano). You can install older toolchain. See the CubeIDE user manual.